Device for forming and sizing closed-end tubes.



N0 778,210. PATENTED DEC. 27, 1904.

W. 0. ANDERSON & P. L. ARGALL. DEVICE FOR FORMING AND SIZING GLOSBD ENDTUBES.

APPLICATION FILED FEB. 9. 1904.

-- Witnesses? UNITED STATES Patented December 27, 1904.

PATENT OFFICE.-

WILLIAM C. ANDERSON AND FRANK L.--ARGALL, OF SAN JOSE,

i A CALIFORNIA.

DEVICE FOR FORMING, AND SIZING CLOSEDI-END-TUABESLV.

SPECIFICATION forming part of Letters l atent No. 778,210, datedDecember Application filed February 9, 190A. Serial No. 192,782.

To all whom it may concern.-

SON and FRANK L. ARGALL, citizens of the, United States, residing at SanJose, in the county of Santa Clara and State of California, haveinvented new and useful Improvements in Devices for Forming and SizingClosed:

tion on line 3 y of Fig.. 1.

End Tubes, of which the following is a specification.

Our invention relates to a machine which is designed for the formationof hollow cylindrical bodies from disks of ductile metal, such as areespecially required in the manufacture of tooth-crowns, and for givingsuch tubes any desired size.

Our invention consists of the parts and the constructions andcombinations of parts, which we will hereinafter describe and claim.

F gure 1 is an elevation, partly n section,

Fig. 2 is a horizontal sec- Fig. 3 is a horizontal section on line 00 wof Fig. 1.

Theobject of our invention is to provide an apparatus for the rapidshaping and sizing. of metallic cylinders or tubes having one closed endfrom suitable disks of metal. This is effected by placing each disk upona perforated die or surface and forcing them through by means of acorresponding plunger, then transferring the disk to another smaller dieand of our apparatus.

plunger, and so on until it has been gradually shaped and given thedesired diameten' which prevents the table being raised from itsposition. This table has a series of holes 5 made through it around itsperiphery and approximately equidistant from the center of rotation,these holes diminishing from the largest size required in commencing thework Be 1t known that we, WILLIAM C. ANDER:

to the smallest required.

j 6 1s acircular carrier having a sleeve or hub, as at 7, which fits andis turnable upon the standard A, and this carrier has aseries ofplungers 8 projecting from its lower face,

these plungers corresponding with the holes 5. .9 represents guidesfixed in the'table 2 and extending up through holes in the carrierh,

in which holes they fit sufficiently loose to allow the carrier to bemoved up and down, while the guides insure the plungers' 8 absolutelyregistering with their respective holes.

The hub 7 has an annular groove or channel made around its upper part,and a tubular casing 10 has its lower edge inturned so as to engage thegroove in the part 7 as at 10, whereby the said part 7 is swiveledrelative to the casing. It will also be noted that the standard or postis shown as cylindrical and that the rack-teethare cut into the convexside of the post, which provides a flat portion at the base of. thespaces between the ,teeth, as shown bythe dotted line in Fig. 3, whicharrangement will prevent the casing turning around the standard. Thecasing 10 incloses the upper part of the standard A and has an open slotin one'side, with lugs 11, between which the lever 18 is fulcrumed. Theinner end of this lever carries a toothed segment which engages theteeth 14, formed on or carried by the standard A. As the standard isstationary and the toothed lever is fulcrumed to the casing connectedwith the hub 7, it will be seen that the upward and downward movement ofthe lever 13 will raise or depress the table '6 and with it the punches8. It will be seen that when the lever 13 is pressed down it will, byreason of the engagement of the segment and the toothed rack, cause thesegment to move down upon the rack. This downward movement of the leverforces the carrier 6 down and with it its plungers 8, each of whichenters a corresponding hole in the die plate or table 2 by reason of theguides 9, fixed in the table and which insure the proper registering ofthe plungers and die-holes", while at the same time the table andcarrier are easily turnable about the standard A by reason of thegroove-and-flange connection at 10. The operation will then be asfollows: The

- operator being conveniently seated with reference to the machineplaces a disk upon the largest opening of the die and by means of thelever 13 depresses the plunger-carrier, and the plunger correspondingwith the die-opening will force the disk through, turning the edges up alittle. The disk is immediately transferred to the next die and plunger,and so on around the periphery of the table, and the latter is turned,by hand or otherwise, as the operation progresses, so as to bring eachdie successively in front or with convenient relation to the operator,who can thus rapidly proceed with the work without changing hisposition.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is

1. A device for forming closed-end tubes from metal disks, said deviceconsisting of a central vertical standard, a table having dieopenings ofdifierent diameters around its periphery, said table turnable about thestandard, a carrier slidable and turnable upon the standard havingpunches upon its periphery corresponding with the die-openings of thetable, guides fixed in the table extending through the carrier, and uponwhich guides the carrier is slidable, a toothed rack carried upon thecentral post, a lever having a toothed segment engaging the rack, and acasing surrounding the post and carrying said lever, said carriersuspended from and revolubly mounted relative to the casing.

2. The combination in a closed-tube-i'orming device, of a centralstandard, a die-table revoluble upon the standard, a punch-carrier revoluble and slidable upon the standard, guides upon which the carrier ismovable to maintain the punches in exact registration with thedie-openings of the table, a channeled hub or extension of the table, atubular casing having its lower end loosely engaging said channel, asegment-toothed lever fulcrumed to the casing and a rack fixed to thestationary central post with which said segment engages.

In testimony whereof we have hereunto set our hands in presence of twosubscribing witnesses.

VILLIAM C. ANDERSON. FRANK L. ARGALL.

Witnesses:

S. C. MAYNARD, \V. H. STACY.

